Brodhead Pietenpol Association

Original Posted By: javier cruz

Original Posted By: "gcardinal"
Subject: Re: Pietenpol-List: Diagonal strutIn a message dated 10/12/2006 9:49:58 AM Central Standard Time, at7000ft(at)gmail.com writes:Hey guysWhat size tubing did you guys use for the diagonal struts running from the top engine mounts to the top of the front cabanes? Did you smash and weld the ends?Hey Rick, I've been working on those struts for a while now, because I'm at a stumbling block on how to do the upper end. I'm using 5/8" X .065" wall forthe tubing. I didn't smash the tube at either end. I terminated the lower end with a piece of 7/16" X .065 wall (perpendicular to strut) that is reamed for the 5/16" bolt, then did a wrap around and up the tube kind of finger patch, made from .063" flat 4130 steel. Just today I made a cardboard templet for the upper end, that terminates at the upper bolt for the cabane struts. I've got to do that end a little different. I am good with the outboard .063" strap,but I don't like how I'll have to do the inboard strap, because of the 'X' cables in front of the front windshield. I will have to make a pretty big notchin that strap, because of the little bracket that the fwd 'X' cables attach to....Any ideas on how I can make that inboard strap at the upper end ?? I already made and installed a bushing on the floor for the front seat belt extension, so I can take my Fat buddies up for a ride...Chuck G.NX770CG________________________________________________________________________________

Original Posted By: Rick Holland
The diagonals on NX18235 are 3/4 X .035 with an adjustable, threaded fitting at the top. Bottom is attached similar to the way Chuck G. has described.Greg Cardinal ----- Original Message -----

Original Posted By: gcardinal
Rick, I am using J3 struts and I am going to use the leftover for the front cabane struts. They will fit between the fittings and bolted in. At the top end I will weld in adjustable strut forks in case I have to tilt the wing back for weight and balance. I think I read somewhere that you are in Castle Rock Co. If so, I would like to call you when I visit my son in Colorado Springs. I am building my Piet in Lagrange Ga. , and I live in Atlanta, Ga. I am about 60 percent done after a year and a half. Gardiner Mason ----- Original Message -----

Original Posted By:

Original Posted By: "Rick Holland"

Original Posted By: Gene Beenenga
Subject: Re: Pietenpol-List: Diagonal strutIn a message dated 10/13/2006 12:58:44 PM Central Standard Time, at7000ft(at)gmail.com writes:Are you making another Piet? I thought yours was done. No, not building another one, just doing some mods. I have always had the cables on the right side of the front pit, and would like to do away with them.Anyhow, how would welding two straps to either side of the tube and bolting that through the top cabane bolt be stronger than smashing the top end of the tube, drilling a hole in it and bolting that through the outside of the upper cabane bolt? If it's to make it look better I think the best looking solution is to add a metal tab to the top front of the cabane and and attach the tube tothat as Jack P. and others has done. I like the way Corky did it (Oscar sent me a good picture of it), by welding the straps on each side of each front cabane strut, then attaching the slantedstrut to that - that keeps the welds in shear. I don't like the tab on the front, because then the weld is in tension.What I was trying to describe DOES NOT smash any tubes...I don't like that idea at all. My present idea that I tried to describe, is to weld tabs to theupper ends of the slanted struts, and bolt them to the top cabane strut. The problem lies on the inboard side of the cabanes, where the front 'X' cable attach tabs are. My challenge is to do it without welding on the cabane struts,in order to save all of work of disassembly for welding.Chuck G.NX770CG________________________________________________________________________________Date: Fri, 13 Oct 2006 19:14:37 -0500 (GMT-05:00)

Original Posted By: Rcaprd(at)aol.com
Subject: Re: Pietenpol-List: Diagonal strutIn a message dated 10/13/2006 1:52:23 PM Central Standard Time, at7000ft(at)gmail.com writes:.065" off of the inside end of the horizontal tube that goes through the top of your cabane strut. Can't do that, Rick, because there would be no material left there in the inboard side of the top of the cabane strut.Chuck________________________________________________________________________________

Original Posted By: shad bell

Original Posted By: Rcaprd(at)aol.com
Subject: Re: Pietenpol-List: Hey ChuckHey Shad,Yes, I've been keeping up with all your adventures, as you have posted them to the group. I'm glad you & your Dad made it home safely. I didn't make it to Brodhead this year, either. However, my reasons were the 40,000 tops aroundKansas City...the ol' Piet just couldn't make it over them !! I think the Jungster-1 design has German roots, and is the plane that a guy built after failing to design & build a plane in 30 days - there was a video about it a few years ago. Looks like a really fun plane to fly, and has aerobatic capabilities. In my experience, there is no finer people out there, than those involved in grassroots aviation, and Brodhead is a fine example. I look forward to meeting you, and all the others there in '07 !!I'm working on finishing up the tail feathers, and control system, but you can see most of what I've got complete on my Tailwind at my web site: http://nx770cg.com/NextProjectTailwind.html Is Bill See still flying his Tailwind ?Chuck G.NX770CG________________________________________________________________________________

Original Posted By: shad bell
Subject: Re: Pietenpol-List: Diagonal strutIn a message dated 10/13/2006 7:16:26 PM Central Standard Time, kgbunltd(at)earthlink.net writes:Has anyone ever tested the strength of the aluminum streamlined strut for use as cabane struts? Personally, I don't like the thought of using aluminum struts on the Piet, for the reasons mentioned a little earlier today -- but you better have an engineer design the end fittings, wrong aluminum alloy and your dead, if you use steel you have dissimilar metal corrosion issuesplus steel bolts in soft aluminum will wear the aluminum with time, plus aluminum fatigues with age and steel does not. Chuck G.NX770CG________________________________________________________________________________Date: Sat, 14 Oct 2006 09:30:41 -0700 (PDT)

Original Posted By: "Rick Holland"

Original Posted By: "Rick Holland"
________________________________________________________________________________Date: Fri, 13 Oct 2006 10:14:54 -0700